The sisters of Patrick Murphy, 26, are heartbroken since his brutal killing -- and they have been unable to explain exactly what happened to him to his only child, his daughter, Abbey.

John Flaherty, 25, told gardai he stabbed Mr Murphy after finding him in bed with his ex-girlfriend, Amy Quigley, and her child with Flaherty at The Glen in Waterford on June 20, 2010. Flaherty, who was found not guilty of murder but guilty of manslaughter, will be sentenced later this month.

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